Device for supplying steam to the cylinders of steam-engines



(No Model.)

E. T. DAVIES. DEVIGE FOR SUPPLYING STEAM TO THE CYLINDERS OF STEAMENGINES. No- 274,286. 7 Patented Mar. 20,1883.

ATTORNEYS.

UNITED STATES.

PATENT 7 OFFICE.

EVAN DAVIES, OF MANISTEE, MICHIGAN.

DEVICE FOR SUPPLYING STEAM TO THE CYLINDERS F STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 274,286, dated March20, 1883.

Application filed September 27, 1882. (No model.)

To all whom it mag concern: I

Be it known that I, EVAN T. DAVIES, of

Manisteefin the county of Manistee and State the following is a full,clear, and exact description.

My invention relates to devicesto supply steam to the cylinders ofsteam-engines, in-

tended mainly to be applied to operating the log-standards of a saw-millcarriagein adjusting or setting the log, although the devices may beused for other purposes; and my invention consists in the peculiarconstruction and arrangement of the parts, as hereinafter more fullysetforth, and pointed out in the claims. 1

Reference is to be had to the accompanying dfhwings, formingapart ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures, and in which figures the devicesto. supply steam to the cylinder are shown in connection with a saw-millcarriage to better elucidate the in vention.

Figure l is aplan view, partly sectional, of a saw-mill carriageprovided with my improved set-works. Fig.2is aside elevation of thesame, partially sectional. Fig. 3 is a longitudinal sectiouof thesteam-drum and the steam supply and discharge pipes. Fig. 4. is across-section on line a: a), Fig. 3. Fig. 5 is a cross-section on line yy, Fig. 3. Fig. 6 is a cross'sectiou on line 2 2, Fig.

A is the carriage, provided with flanged wheels (1., fitted to run on. atrack, b.

B B are sliding blocks or standards, fitted on the head-blocks O,transversely of the carriage, and formed at their under sides with racksto engage pi'uions on a longitudinal shaft, 0, by which the blocks aremoved and the log adjusted. The shaft 0 is madein two parts, connectedby a coupling, 01, so as to allow separate adjustment of the blocks B byhand. Upon the end of the shaft 0 is a beveled pinion engaging a'similarpinion, e, that V is on a shaft, f, mounted transversely at one end ofthe carriage. On the end of the shaft f, at one side of the carriage, isfixed a disk, g, that carries four pawls, h, taking into teeth of theratchet-wheel i, that is fitted loosely on the hub of the pawl-disk 9'.At one side of and attached to the ratchet-wheel i is a pinion, k.

D is the steam-cylinder, mounted at one side of the carriage A, andprovided with a pistonrod the outer end of which is formed as a rack, I,that extends beneath and engages the pinion k.

E is a steam-drum placed on the floor beneath. the carriage, andconsisting of a cylinder fitted with heads and stuffingboxes at eachend. Through this cylinder is fitted the exhaust-steam pipe a,and withinthe exhaustpipe is the steam-pipe b. The steam-drum is provided atsuitable intervals with rings 0 for support of the exhaust-pipe, theserings being bored to fit the pipe closely, and being preferablysustained in the drums between flanges thereon,as shown in Fig.3. Therings are also apertured, as shown in Fig. 4, to allow passage of thesteam. The sections of the exhaust-pipe are connected by internalcouplings, 01, Figs. 3 and 6, which are also perforated to allowpassageof steam,and within the drum E the steam-pipe b and exhaust-pipea are connected by an internal coupling, 0, Figs. 3 and 5, that isapertured for passage of the exhaust-steam, and also provided with aside aperture, Z, to coincide with an opening in the side of theexhaust-pipe, whereby the live steam is allowed to pass from thesteam-drum into the pipe b at all times. The length of the drum shouldbe such that this coupling 6 shall remain therein during the wholemovement 'of the carriage. The exhaust-pipe a connects to a chamber, f,at the under side of the cylinder. The steam-pipe passes through the chamber f,which has a suitable stuffin g-box around the pipe, and thesteam-pipe then connects by a suitable bend with the valve-chamher, fromwhich pipes 9 pass to the ends of the cylinder.

In operation, steam being admittedto the cylinder to project the rackpiston-rod l, the pinion k is thereby rotated, and through the pinion eand shaft 0, provided with end pinions, the standard B, provided with arack on its lower face, is reciprocated.

Having thus fully described my invention, I claim as new and desire tosecureby Letters Patent-- 1. The combination, with the steam-cylin- 3.The ring-supports 0, in combination with der D, of the steam-drum E, theexhaust-pipe the steam-drum E and sliding exhaust-pipe a,

a, and steam-pipe b, snbstantiallyas described.

2. The perforated coupling e, in combina- 5 tion with the steam-pipeb,the sliding exhaust- I pipe 01,, and the steam-drum E, substantiallyas described.

substantially as and for the purposes set forth. to

. EVAN T. DAVIES. Witnesses:

NELSON O. PHINNEY, THOMAS J. BAMSDELL.

